Attackers are cashing in on fresh 'CopyFail' Linux flaw

A newly-disclosed Linux kernel bug called 'CopyFail' is being exploited, allowing low-level users to gain full control of a system. The bug, tracked as CVE-2026-31431, was disclosed by cybersecurity consultancy Theori and has been added to the CISA's Known Exploited Vulnerabilities catalog. Federal agencies have been ordered to patch within two weeks.